460 Series Process PumpsANSI B73.1M Standard

460 Series Process PumpsANSI B73.1M Standard

Flows to: 7,400 GPMHeads to: 985 Feet

Temperatures to: 700° F

American-Marsh Pumps, one of the oldestpump lines in America, are pump productssteeped in heritage. Since 1873, the American-Marsh line of pumps has withstood the test oftime. During the last 140 years, over 100 vari-eties of pumps have been designed and built.From steam pumps to centrifugal pumps,American-Marsh pumps have been built tomeet the ever changing requirements of society.Over the last century through continuous prod-uct development, more American-Marsh mod-els have been retired than most other pumpmanufacturers have ever produced. Hundredsof thousands of pumps have been made, alldesigned for longevity, allowing many of themto continue servicing customers over 50 years.All of our pumps have three superior charac-

teristics; Design, Performance, and Durability.Our engineering department, which includes anin-house pattern shop, designs each pump sothat installation and maintenance is easy. Ourperformances are engineered to meet or beatthe competition in each category. For 140

140 Years of Pump Manufacturing

years, American-Marsh Pumps products haveprovided cost effective solutions by buildingpumps to last. Durability by design is always themost cost effective solution. From engineeringand design to final assembly, experienced peoplecontrol each step of the manufacturing processwith quality control inspections performed ateach step. All pumps shafts are heat straight-ened. All impellers are computer balanced.Pump testing is done in our new state of the arttest facility. All of these factors ensure youreceive consistent quality product every time.American-Marsh Pumps has provided quality

pump products for over 140 years. AtAmerican-Marsh Pumps, we know that long lifeand superior performance are the keys to satis-fied customers. By understanding your needs,we can design products that meet those needs.Our product family reflects years of customerinput, product upgrades, redesign and newproduct development, all focused on meetingand exceeding your expectations.

Casing: The casing is constructed of high tensile caststeel, ductile iron or other specified material. It is of thevolute type, carefully and accurately proportioned topermit smooth flow and to convert high velocity energyof the fluid as it leaves the impeller into pressure.Suction and discharge nozzles are flanged and are castintegral with the volute.OSD & OSG models have cast integral feet standard

and the discharge port is of the vertical centerline type.The casing assembly fully meets ANSI B73.1M dimen-sional requirements. Necessary vent and drain openingscan be provided upon request. OSD Low Flo modelsfeature concentric casings that minimize shaft deflectionand pump vibration.Impeller: The OSD impeller is of the reverse vane,

end suction type, casted in one piece of cast steel orother specified material. Running clearances need toonly be adjusted between the back of the impeller andthe casing adapter. This design allows for repeatable fac-tory tolerances, all of which can be adjusted on thebench, not just in the field. All impellers are hydrauli-cally and dynamically balanced prior to assembly. TheOSG impeller is of the semi-open, end suction type,casted in one piece of ductile iron or other specifiedmaterial. Running clearances need to be adjustedbetween the front of the impeller and the casing. Allmodels meet the stringent performance requirements ofANSI B73.1M. American-Marsh also offers 6 Low-Flow (LF) models to meet difficult low-flow/high-headprocess applications.Shaft: The shaft is of high strength steel or other

specified material, ground to accurate dimensions andpolished to a smooth surface. It is designed for extrastiffness to avoid all critical speeds in operation. OSDpumps lead the industry in low L3/D4 ratio’s minimiz-ing shaft deflection at the stuffing box. All OSD &OSG models guarantee less than 0.002” shaft deflectionat the seal face location, while in operation. As anoption, the shaft can be protected by a shaft sleeve ofample thickness to ensure long life. The shaft sleeve canbe supplied in various materials.Seal Chamber: The OSD pump has seal chambers

available in five (5) different configurations dependingon the jobsite requirement. OSD pumps feature theFlow Modified (FM) seal chamber that keeps solid mat-ter from collecting in the seal chamber causing prema-ture seal failure. The FM bores are available in a smallbore (FMS), a large bore (FML) and a small bore withcast integral gland (FMI), all designed to meet the pro-

cess requirements of the seal industry. OSD models canalso be supplied in a standard Cyclindrical Bore (CB)arrangement. The CB bores are available in a smallbore (CBS) and large bore (CBL) both designed tomeet the process requirements of the seal industry. TheOSG pump has seal chambers available in two (2) dif-ferent configurations depending on the jobsite require-ment. OSG pumps feature the Flow Modified (FM)seal chamber that keeps solid matter from collecting inthe seal chamber causing premature seal failure. TheCB bores are available in a small bore (CBS) designedto meet the process requirements of the seal industry.Seal chambers have provisions for various flush planarrangements customizing the seal chamber to meetthe requirements of the end user. For abrasive applica-tions, packing with a lantern ring can also be supplied.A wide variety of component and cartridge mechanicalseals can be used with OSD & OSG standard compo-nents.Power Frame: The power frame is constructed of

high tensile cast iron and provides support for theinboard and outboard bearings. The outboard bearingis of the double row, angular contact type and theinboard bearing is of the single row, deep groove typefor excellent axial and radial load support. On OSDmodels, axial adjustment of the impeller employs amicrometer adjustment which allows the user to dialback factory tolerances between the impeller and theseal chamber. This re-adjustment of tolerances can bedone on the bench, compensating for proper seal set-ting and eliminating the need to have the casing nearfor final adjustment. On OSG models, axial adjustmentof the impeller employs a micrometer adjustment whichallows the user to dial back factory tolerances betweenthe impeller and the pump casing. Bearing isolatorsensure that contaminents are kept out of the powerframe. For extremely crucial applications, magneticbearing isolators with a poppet breather can be speci-fied, hermetically sealing the power frame. The powerframe has an oversized, integral oil sump that providesoil for lubrication to each bearing. A large one inch oillevel eye is provided standard on the power frame tovisually indicate the oil level. The OSD bearings andshafts are so designed to last up to 61% longer than thecompetition. With OSD shaft deflection indicies sur-passing nearly all of the competition, 43-252% greaterstiffness is achieved resulting in longer Mean TimeBetween Planned Maintenance (MTBPM).

SpecificationsOSD & OSG Series

Model OSD ANSI Pump

Power Frame Adjustment• Micro-millimeter shaft and impeller

adjustment• Accurately set impeller clearance in

15 to 20 seconds• Optional angular contact bearings for the

most demanding applications

Flows To: 7,400 GPMHeads To: 985 FeetTemps To: 700° F

Markets:• Chemical• Food & Beverage• General Industry• Marine• Mining & Aggregate• Oil & Gas• Power Generation• Petro-Chemical• Pharmaceutical• Pulp & Paper• Water & Wastewater

Power Frame• Heavy duty ductile iron• Single row inboard and double row

outboard bearings• Oil lubricated with extra large oil sump• Oversized oil level eye• Double lip oil seals• Top vent/breather• Optional bearing isolators• Optional grease lubrication

Reverse VaneImpeller

Semi-OpenImpeller

Low FlowImpeller

Casing• Standard cast steel or other specified

material• Fully meets ANSI B73.1M standards• Heavy wall thickness to provide for

generous corrosion allowance• Fully cast integral feet for support when

utilizing “back-pull-out” feature• Centerline discharge transmits residual

pipe strain to feet of casing and allowsfor self venting

• Class 150 pound flat face flangesstandard

• Optional 150# raised face, 300# flatface and 300# raised face suction anddischarge flanges

Impeller• Hydraulically balanced one piece investment

cast of cast steel or other alloy• Expertly machined to customer

specifications• Fully balanced prior to assembly• Exclusive reverse vane design that offers

repeatable pump performance• Optional front semi-open impeller

Alignment• Four precision machined metal-to-metal fit locations

(other manufacturers offer only two)• Precision machined metal-to-metal bearing carrier

reduces stack-ups to improve shaft concentricity

Shaft• Designed and sized especially for

the pump and its applications• Investment cast or high alloy bar

stock available• Solid, hook sleeve, friction welded

or composite shafts available• Offset keyways to aid shaft balance• Runout of <0.001 inches at

mechanical seal allows seal faces torun true

Engineered Seal Chambers• Five (5) seal chambers available

depending on application (FML, FMS,FMI, CBL & CBS)

• Extend mechanical seal life• Utilize less expensive seals and flush

plans• Improve pump reliability• Optional packing for abrasive

applications• Optional jacketed seal chambers

M-Power Frame• Unique and industry leading

micrometer impeller adjustment• Heavy duty cast iron• Single row inboard and double row

outboard bearings• Oil lubricated with extra large oil sump• Oversized oil level eye• Double bearing isolators• Top vent/breather• Optional grease lubrication

Model OSG ANSI Pump

Power Frame Adjustment• Micro-millimeter shaft and impeller adjustment • Accurately set impeller clearance in 15 to 20 seconds• Optional angular contact bearings for the most

demanding applications

Flows To: 7,000 GPMHeads To: 730 FeetTemps To: 700° F

Markets:• Chemical• Food & Beverage• General Industry• Marine• Mining & Aggregate• Oil & Gas• Power Generation• Petro-Chemical• Pharmaceutical• Pulp & Paper• Water & Wastewater

Semi-OpenImpeller

Casing• Standard ductile iron or other specified

material• Fully meets ANSI B73.1M standards• Heavy wall thickness to provide for

generous corrosion allowance• Fully cast integral feet for support when

utilizing “back-pull-out” feature• Centerline discharge transmits residual

pipe strain to feet of casing and allowsfor self venting

• Class 150 pound flat face flangesstandard

• Optional 150# raised face, 300# flatface and 300# raised face suction anddischarge flanges

Impeller• Hydraulically balanced, semi-open,

investment cast of ductile iron or other alloy• Expertly machined to customer

specifications• Fully balanced prior to assembly

Alignment• Four precision machined metal-to-metal fit locations

(other manufacturers offer only two)• Precision machined metal-to-metal bearing carrier

reduces stack-ups to improve shaft concentricity

Shaft• Designed and sized especially for

the pump and its applications• Investment cast or high alloy bar

stock available• Solid or hook sleeve shafts available• Offset keyways to aid shaft balance• Runout of <0.001 inches at

mechanical seal allows seal faces torun true

Engineered Seal Chambers• Five (5) seal chambers available

depending on application (FML, FMS,FMI, CBL & CBS)

• Extend mechanical seal life• Utilize less expensive seals and flush

plans• Improve pump reliability• Optional packing for abrasive

applications

OSD & OSG Fluid End

Item Part Typical SizeI Casing Drain 3/4" (19 mm)-10, 1/2" (13 mm) NPT, 3/4" (19 mm) NPTII Suction Nozzle Gage Connection 1/4" (6 mm) NPTIII Discharge Nozzle Gage Connection 1/4" (6 mm) NPTIV Connection for Line to Seal Chamber 1/4" (6 mm) NPTV Connection for Line to Seal Chamber 1/4" (6 mm) NPTVI Flush Connection for Mechanical Seal 1/4" (6 mm) NPTVII Bottom Tap in Seal Chamber 1/4" (6 mm) NPT

Centerline mounted casings(OSO Hot Oil) are used toreduce loads caused bythermal expansion. Jacketedfeet with inlet/outlet portsfurther assure effectivetemperature control.

Jacketed FM chamber is preferred when protection of theprocess temperature is important.

Jacketed standard bore (CBS) is recommended whencooling the seal chamber is the objective.

Optional Connections

Exclusive reverse vane impeller with balanceholes offers important performanceenhancing maintenance reducingadvantages. Repeatable performance andseal chamber pressures allow repeatableMTBPM cycle.

Front vane, semi-open impeller is fullyinterchangeable with the reverse vaneimpeller. Excellent choice for stringyand certain applications requiring highshear against the casing.

Front vane, Low-Flo, semi-open impellerfor operation at low flow with minimalthrust loads and vibration. Radial loadsare reduced up to 90% and shaft vibrationis reduced up to 50% at low flows.

An impeller cannotbe adjusted to twolocations.

Seal and bearing lifeare reduced due toincreased loads afterwear and mainte-nance adjustment.

Only an AmericanMarsh reverse vaneimpeller offers repeat-able performanceafter wear andimpeller adjustment.

ReverseVaneImpellerAdjustment

Front VaneImpellerAdjustment

PumpOut Vanes

PumpPerformanceVanes

Only OneToleranceImpeller VanesTo Cover

AMP Reverse Vane Impeller With Balance HolesEffects of Wear

Thrust loads decrease as seal chamber gap widensChamber pressure increases as gap widens

Effects of Impeller Adjustment To Seal ChamberOriginal pressures and loads re-established afteradjustmentsRepeatable MTBPM cycle life

Front Vane Open Style Impeller With Pump Out Vanes

Effects of WearThrust loads increase as seal chamber gap widensChamber pressure increases as gap widens

Effects of Impeller Adjustment To Seal ChamberChamber pressure and bearing loads increase aftereach adjustmentNon-repeatable MTBPM cycle life

Performance Life Cycle Comparison:

FMLOversized, tapered bore with 8specially shaped and evenly spacedcast-in flow modifiers.Designed for seals with large glandbolt and gasket circles.

• Single internal cartridge seals.• Dual internal/external cartridge seals.• Single internal component seals with flexibly mounted seats.*• Dual internal “true” tandem cartridge seals.Note: Bypass flush to internal seal normally not required. Barrierfluid or external flush may apply to dual seals (Plans 52, 53, etc.)

FMSSame chamber design as FML, butaccommodates seals with small glandbolt and gasket circles.

Same seal and flush plan recommendations as for FML.Single seals with all types of seat mounting configurations can beinstalled.FMS design is provided for the convenience of customers with sealstandards that include small glands. This design is American-Marsh’s secondary recommendation to the FML.*

FMISame chamber design as FMS, butincludes a cast-in integral gland.

• Single internal, flexibly mounted seals. Uses sleeve for sealsetting and fast installation.

• “Sanitary-type” applications. Less prone to bacteria build up.Note: Bypass flush is normally not required.

CBLOversized, cylindrical step boredesign for seals with large glandbolt and gasket circles.

• Dual internal component seals. Isolates the seal chamber fromthe process. Allows less expensive seal materials.Recommended in tough slurry applications.

Note: Use External Flush Plan 54. Others (i.e., Plans 52, 53) notrecommended without close tolerance pumping mechanism.• Single internal component or cartridge seals when applied with

a throat bushing. Usually selected to increase stuffing boxpressure above the vapor pressure to avoid cavitation, etc.

Note: Applied with Plan 11, etc.

CBSCylindrical bore design forpacking arrangements andconventional seals with smallgland bolt and gasket circles.

• Dual internal component seals. Isolates the seal chamber fromthe process. Allows less expensive seal materials. Recommendedin tough slurry applications. Allows for thermal convection typeflush plans; however pumping ring devices are recommended.

Note: Use External Flush Plan 52, 53, 54• Single internal component or cartridge seals when applied with a

throat bushing. Usually selected to increase stuffing boxpressure above the vapor pressure to avoid cavitation, etc.

• Usually preferred over the CBL when jacketing is selected forincreased effectiveness in cooling or heating.

Note: Applied with Plan 11, etc.

All seal selections perform best when the faces are located directly within the flush plan, particularly if solids, liquors, or slurries are present.Component seals with clamped seat gland designs locate the seal faces reasonably well. Flexibly mounted seat glands should include the vent anddrain option to better locate the seal faces. The FML is always the first choice chamber for maximum self-flush path benefits.

1 Radiused “sled-runner” keyways improve strengthat this stress point.

2 Offset keyways aid shaft balance.3 Alloy identification on every shaft and sleeve

ensures that the right parts go in every time.4 Large radii fillets add strength.5 Accurate machining under bearings ensures perfect

bearing fits without vibration or hot running.6 Run-out of <0.001 in (0.03 mm) at mechanical

seal allows seal faces to run true.7 Critical surfaces ground to a surface finish of 16u

in (0.4 micron) ensure the secondary sealing abilityof mechanical seals.

8 Steel power ends handle higher horsepower loadsthan stainless.

9 Minimally radiused edges ensure full contact withimpeller for reduced run-out.

OSD Power Frame

Standard OSD Power Frame Features• Double row, angular contact

outboard/single row, deep grooveinboard bearings for excellent axial andradial load support

• Double lip oil seals• Top mounted vent and oil filler• Trico oiler• Large one inch diameter reflective

sight glass• Micro-millimeter impeller adjustment• Optional oil slinger• Optional bearing isolators• Optional magnetic drain plug• Optional shielded and grease

lubricated bearings

Larger Oil Sump

Optional Bearing Housing Cooler

Shaft Details

1 Radiused “sled-runner” keyways improve strengthat this stress point.

2 Offset keyways aid shaft balance.3 Alloy identification on every shaft and sleeve

ensures that the right parts go in every time.4 Large radii fillets add strength.5 Accurate machining under bearings ensures perfect

bearing fits without vibration or hot running.6 Run-out of <0.001 in (0.03 mm) at mechanical

seal allows seal faces to run true.7 Critical surfaces ground to a surface finish of 16u

in (0.4 micron) ensure the secondary sealing abilityof mechanical seals.

8 Steel power ends handle higher horsepower loadsthan stainless.

9 Minimally radiused edges ensure full contact withimpeller for reduced run-out.

OSG Power Frame

Standard OSG Power Frame Features• Double row, angular contact

outboard/single row, deep grooveinboard bearings for excellent axial andradial load support

• Labyrinth bearing isolators at outboard and inboard locations

• Top mounted vent and oil fill port• Optional Trico oiler• Large one inch diameter reflective

sight glass• Micro-millimeter impeller adjustment• Optional oil slinger• Optional magnetic drain plug• Optional shielded and grease

lubricated bearings

Oversized Oil Sump

Optional Bearing Housing Cooler

Shaft Details

3-11/16 (90.5)

0.875 (22.225 mm)0.874 (22.200 mm)

1.375 (34.925 mm)1.374 (34.900 mm)

3-11/16 (90.5) 4-1/8 (105) 5-7/8 (149.2 mm)

ST-M

MT-M

LT-M

XLT-M

1.1250 (28.575 mm)1.1245 (28.562 mm)

1.750 (44.45 mm)1.749 (44.425 mm)

5-1/16 (128.6) 6-3/4 (171 mm) 7-7/8 (200.0 mm)

5-1/2 (139.7) 6-7/8 (164 mm) 7-7/8 (200.0 mm)

8-7/8 (224.1) 9-1/4 (235 mm) 9 (228.6 mm)

(38.1 mm)

(47.6 mm)1-7/8

1.875 (47.625 mm)1.874 (47.600 mm)

2.125 (53.975 mm)2.124 (53.950 mm)

2.500 (63.500 mm)2.499 (63.475 mm)

Group 1 Group 2 Group 3Shaft Diameter at impeller 0.75 (19) 1 (25) 1.5 (38)

Diameter in Stuffing Box/Seal Chamber(Less Sleeve) 1.125 (29) 1.5 (38) 2.125 (54)(With Sleeve) 1.375 (35) 1.875 (48) 2.625 (67)Diameter Between Bearings 1.625 (41) 2.438 (62) 3.25 (83)Diameter at Coupling 0.875 (22) 1.125 (29) 2.375 (60)Overhang 5.969 (152) 7.688 (195) 10.25 (260)Maximum Shaft Deflection 0.002 (0.05)Shaft Deflection Index (L3/D4)(Less Sleeve) 59 37 23(With Sleeve) 133 90 53

Sleeve O.D. thru Stuffing Box/Seal 1.375 (35) 1.875 (48) 2.625 (67)Chamber

BearingsRadial 6207 6310 6314Thrust 5306 5310 5314Bearing Span 3.594 (91) 6.875 (175) 10.5 (267)

CBL/FML Seal Bore 2.875 (73) 3.625 (92) 4.625 (117)ChamberCBS Stuffing Bore 2.125 (54) 2.625 (67) 3.625 (92)BoxPower Limits HP (kW) per 100 RPM 1.1 (0.82) 4.3 (3.2) 18.6 (13.9)

TemperatureMaximum Liquid Temperature - 350° F (177° C)Oil/Grease Lubrication w/out CoolingMaximum Liquid Temperature - 700° F (370° C)Oil Lubrication w/High Temp. Option

Casing Corrosion Allowance 0.125 (3)

Technical Construction

ST-M MT-M LT-M LT-MShaft Diameter at impeller 0.75 (19) 1 (25) 1.25 (32) 1.5 (38)

Diameter in Stuffing Box/Seal Chamber(Less Sleeve) 1.375 (35 1.75 (45) 2.125 (54) 2.5 (64)(With Sleeve) 1.125 (29) 1.5 (38) 1.875 (48) 2 (51)Diameter Between Bearings 1.5 (38) 2.125 (54) 2.5 (64) 3.125 (79)Diameter at Coupling 0.875 (22) 1.125 (29) 1.875 (48) 2.375 (60)Overhang 6.125 (156) 8.375 (213) 8.375 (213) 9.969 (253)Maximum Shaft Deflection 0.002 (0.05)Shaft Deflection Index (L3/D4)(Less Sleeve) 143 116 48 62(With Sleeve) 64 63 29 25

Sleeve O.D. thru Stuffing Box/Seal 1.375 (35) 1.75 (45) 2.125 (54) 2.5 (64)Chamber

Bearings Radial 6207 6309 6311 6313Thrust 3306 3309 7310 3313Bearing Span 4.125 (105) 6.75 (171) 6.875 (164) 9.25 (235)

CBL/FML Seal Bore 2.875 (73) 3.5 (89) 3.875 (98) 4.75 (120)ChamberCBS Stuffing Bore 2 (51) 2.5 (64) 2.875 (73) 3.375 (86)BoxPower Limits HP (kW) per 100 RPM 1.1 (0.82) 3.4 (2.6) 5.6 (4.2) 14 (10.5)Temperature Maximum Liquid Temperature - Oil/Grease Lubrication without Cooling 350° F (177° C)

Maximum Liquid Temperature - Oil Lubrication with High Temp. Option 700° F (370° C)Casing Corrosion Allowance 0.125 (3)

Mechanical Seals

820 Series Component

850B Series Balanced Single Cartridge

860B Series Balanced Double Cartridge

Seal De-Rating (Standard Materials)

Lubricity of Gasoline, Kerosene, Oil or Better x 1.00Fluid Aqueous, Water, etc. x 0.75

Light Hydrocarbons x 0.60Below 79°C/175°F x 1.00

Fluid Above 79°C to 121°C/175°F to 250°F x 0.90Temperature Above 121°C to 177°C/250°F to 350°F x 0.80

Above 177°C/350°F x 0.65Seal Size Seal Size 1800 RPM 3600 RPMand 1.000 to 2.000 x 1.00 x 1.00

Rotational 2.125 to 2.875 x 0.85 x 0.85Speed 3.000 to 4.000 x 0.61 x 0.61

Seal De-Rating (Standard Materials)

Lubricity of Gasoline, Kerosene, Oil or Better x 1.00Fluid Aqueous, Water, etc. x 0.75

Light Hydrocarbons x 0.60Below 79°C/175°F x 1.00

Fluid Above 79°C to 121°C/175°F to 250°F x 0.90Temperature Above 121°C to 177°C/250°F to 350°F x 0.80

Above 177°C/350°F x 0.65Seal Size Seal Size 1800 RPM 3600 RPMand 1.000 to 2.000 x 1.00 x 1.00

Rotational 2.125 to 2.875 x 0.85 x 0.85Speed 3.000 to 4.000 x 0.61 x 0.61

Seal De-Rating (Standard Materials)

Lubricity of Gasoline, Kerosene, Oil or Better x 1.00Fluid Aqueous, Water, etc. x 0.75

Below 79°C/175°F x 1.00Fluid Above 79°C to 121°C/175°F to 250°F x 0.90

Temperature Above 121°C to 177°C/250°F to 350°F x 0.80Above 177°C/350°F x 0.65

Seal Size 1800 RPM 3600 RPM0.250 to 1.500 x 1.00 x 0.50Seal Size and 2.125 to 2.500 x 0.92 x 0.46Rotational 2.625 to 3.000 x 0.80 x 0.40Speed 3.125 to 3.500 x 0.60 x 0.303.625 to 4.000 x 0.51 x 0.25

1x1 - 6/21

1 x3 - 6/2 1

2x3 - 6

1x1 - 8/21

1 x3 - 8/2 1

1 x3 - 10/2 1

1 x3LF - 13/2 1

1 x3 - 13/2 1

6x8 - 14A

6x8 - 16A

8x10 - 14

8x10 - 16

8x10 - 16H

4x6 - 13A

4x6 - 10

4x6 - 10H

3x4 - 13

3x4 - 13HH

3x4 - 10H

3x4 - 10

3x4 - 8

2x3 - 13

2x3 - 10A

1x2LF - 10

1x2 - 10

2x3 - 8

PowerEnd

Adapter Impeller Casing SizeStuffingBox/SealChamber

PowerEnd

Adapter Impeller Casing SizeStuffingBox/SealChamber

Group 1

OSD Modular Interchangeability

Group 2

Group 3

460 Series OSD Power Frame Groups

4x6 - 16

1x1 LF - 8/21

1x1 - 6/21

1 x3 - 6/2 1

2x3 - 6

1x1 LF - 8/21

1x1 - 8/21

1 x3 - 8/2 1

1 x3 - 10/2 1

1 x3 - 13/2 1

1 x3LF - 13/2 1

6x8 - 13

6x8 - 15

8x10 - 13

8x10 - 15

8x10 - 15G

4x6 - 13

4x6 - 10G

4x6 - 10H

3x4 - 13

3x4 - 10H

3x4 - 8G

3x4 - 10

3x4 - 8

3x4 - 7

2x3 - 13

2x3 - 10

1x2 - 10

2x3 - 8

PowerEnd

Adapter Impeller Casing SizeStuffingBox/SealChamber

PowerEnd

Adapter Impeller Casing SizeStuffingBox/SealChamber

Max BHP - 40 HP (30kW)ST - M

OSG Modular Interchangeability

Max BHP - 200 HP (149 kW)LT - MMax BHP - 122 HP (91 kW)MT - M

Max BHP - 250 HP (187 kW)XLT - M

MT - M

LT - M

460 Series OSG M-FRAME Groups

1x2LF - 10

Distribution/Service Centers:Nebraska: 113 South Lincoln Avenue, Hastings, NE 68901 (800)408-7167California: 3269 East North Building D, Fresno, CA 93725 (800)288-7167Florida: 2805 Badger Road, Lakeland, FL 33811 (800)444-7167

www.american-marsh.com

SHAFTS

Shafts are available in a wide variety of materialsand are sized for minimal shaft deflection. Solid,composite and hook sleeve configurations areavailable upon request.

American-Marsh Pumps provides the user dependability and durability. bydesigning pumps with upgraded, heavier-duty components. Durability bydesign is always the most cost effective solution.

BEARINGS

OSD ANSI pumps feature oversized, oillubricated bearings designed for long lifeand minimal maintenance. The inboardbearing is of the single row type and theoutboard bearing is of the double rowtype. The power frame utilizes two dou-ble lip oil seals to minimize the entranceof contaminents into the oil. MTBPM isdrastically increased by using larger bear-ings and larger shafts allowing for a small-er shaft deflection index all which extendsseal life.

IMPELLER RING

The impeller is investment castedout of customer specified materialand is of the exclusive reverse vanedesign. All impellers are dynami-cally and hydraulically balanced tomeet ANSI B73.1M performancestandards. Optional semi-openimpellers can be supplied uponrequest.

MECHANICAL SEALS/PACKING

OSD ANSI pumps feature five (5) seal chambers designedto meet extreme services found in today’s applications. FML,FMS, FMI, CBL & CBS seal chambers offer the enduser apump and an engineered seal chamber designed to meet spe-cific fluid and temperature requirements.

OTHER PUMP PRODUCTS

SPLIT CASETo 32+" Discharge 30,000+ GPM, 550'

VERTICAL TURBINETo 42+" Bowl85,000+ GPM, 2500+'

MULTI-STAGETo 8" Discharge2500+ GPM, 2100'

SELF PRIMERTo 12" Discharge6400 GPM, 200'

VERTICAL SUMPTo 12" Discharge9800 GPM, 985'

American-Marsh Pumps185 Progress RoadCollierville, TN 38017PH: (800)888-7167FX: (901)860-2323

CASING

The casing fully meets ANSI B73.1M dimensional standards and isdesigned for back pull-out making service easy. The casing is also providedwith additional thickness for corrosion allowance. Surfaces are machined toaccurate tolerances in our machining centers. Centerline discharge allows forself-venting casings and cast integral feet provide additional support.

AM

460A

NSI

-1-1

1-20

16